I have a layer that contains a master line (one big polyline) and a another layer that contains "break lines". I need to be able to split the master line at the intersection of each of these break lines.

I'm looking for a PostGIS 1.5 version of ST_Split. If I could upgrade to 2.0 I would but can't really do that at this point in time.

I thought this would be relatively easy but can't seem to find anything; or when I do it's just related to polygons being split with polylines.